Lison river source (Source du Lison). It is certainly a resurgence

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Size: 4429px × 2953px
Location: Poligny
Photo credit: © Pierre-Jean DURIEU / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: cave, doubs, du, ecology, france, franche-comte, lison, nature, resurgence, river, rock, source, tourism, travel, visit, water, waterfall